C++ (Cpp) buf_LRU_block_free_non_file_page Beispiele

Beispiel #1

Datei: buf0lru.c Projekt: Abner-Sun/mysql5.1-vx-pre1

/**********************************************************************
Puts a file page whose has no hash index to the free list. */
static
void
buf_LRU_block_free_hashed_page(
/*===========================*/
	buf_block_t*	block)	/* in: block, must contain a file page and
				be in a state where it can be freed */
{
	ut_ad(mutex_own(&(buf_pool->mutex)));
	ut_ad(mutex_own(&block->mutex));

	ut_a(block->state == BUF_BLOCK_REMOVE_HASH);

	block->state = BUF_BLOCK_MEMORY;

	buf_LRU_block_free_non_file_page(block);
}

Beispiel #2

Datei: buf0buddy.c Projekt: tsu-iscd/mac-mysql

/**********************************************************************//**
Deallocate a buffer frame of UNIV_PAGE_SIZE. */
static
void
buf_buddy_block_free(
/*=================*/
	buf_pool_t*	buf_pool,	/*!< in: buffer pool instance */
	void*		buf)		/*!< in: buffer frame to deallocate */
{
	const ulint	fold	= BUF_POOL_ZIP_FOLD_PTR(buf);
	buf_page_t*	bpage;
	buf_block_t*	block;

	ut_ad(buf_pool_mutex_own(buf_pool));
	ut_ad(!mutex_own(&buf_pool->zip_mutex));
	ut_a(!ut_align_offset(buf, UNIV_PAGE_SIZE));

	HASH_SEARCH(hash, buf_pool->zip_hash, fold, buf_page_t*, bpage,
		    ut_ad(buf_page_get_state(bpage) == BUF_BLOCK_MEMORY
			  && bpage->in_zip_hash && !bpage->in_page_hash),
		    ((buf_block_t*) bpage)->frame == buf);
	ut_a(bpage);
	ut_a(buf_page_get_state(bpage) == BUF_BLOCK_MEMORY);
	ut_ad(!bpage->in_page_hash);
	ut_ad(bpage->in_zip_hash);
	ut_d(bpage->in_zip_hash = FALSE);
	HASH_DELETE(buf_page_t, hash, buf_pool->zip_hash, fold, bpage);

	ut_d(memset(buf, 0, UNIV_PAGE_SIZE));
	UNIV_MEM_INVALID(buf, UNIV_PAGE_SIZE);

	block = (buf_block_t*) bpage;
	mutex_enter(&block->mutex);
	buf_LRU_block_free_non_file_page(block);
	mutex_exit(&block->mutex);

	ut_ad(buf_pool->buddy_n_frames > 0);
	ut_d(buf_pool->buddy_n_frames--);
}